totalizing mechanism



Nov. 9, 1948. F. Q. RAST TOTALIZING MECHANISM 2 sheets-sheet 1 OriginalFiled April 15, 1944 7 Nov. 9, 194s. E RAST 2,453,342

TOTALIZING MECHANISM Original Filed April 15. 1944 V 2 Sheets-SheetINVENTOR W mw Fred 5H0? QEasi" Patented Nov. 9, 1948 2,453,342 I i I I IFrederick Q. East, Chicago, Ill., assignor to Commercial ControlsCorporation, a corporation "of Delaware Original application Aprill 15,1944, Serial I No. 531,232. Divided and this application February 24,1945, Serial N0. 579,549 V 2 Claims. (01.. 235-91) This inventionrelates to totalizing mechanism. One of the objects of this invention isto provide totalizing mechanismwhich is simple, thoroughly practical,and durable in use. Another object is to provide mechanism of the abovecharacter which will be efiicient and accurate in operation. Another,object is to provide mechanism of the above character which may bemanufactured from inexpensive materials without undue labor costs.Another object is to provide mechanism of theabove character which willbe strong and wellable to withstand the strains of hard usage. A furtherobject is to provide mechanism of the above'character which willtotalize units fed into it from two different sources without regard forthe timing of the feeding of units into the mechanism'from eithersource. Other objects will be in part obvious and in part pointed outherein after. 1

The invention accordingly consists in the features of construction,combinations of elements, and arrangements of parts, all as will beillustratively described herein, and the scope of the application ofwhich will be indicated in the following claims.

"Referring now to the accompanying drawings in which is shown one of thevarious possible em- 'bodiments of this invention, I

Figure l'is an exploded perspective view of cert'ain'parts of thetotalizing mechanism;

Figure 2 is a vertical section on an enlarged scale taken on the line2-2 of Figure Figure 3 is aside elevation on an enlarged scale of thetotalizingwheel;

Figure 4is'avertic'al section taken on the line 4-4 of Figure 2; and

Figure 5 is a side elevation of the totalizing mechanism partly insection to show the mounting of the differential pinions thereon.

Similar reference characters refer to similar parts throughout theseveral views of the drawings,

1 ifI his application is a division of the copending application ofFrederick K. East, which bears Serial No. 531,232,"=andwhich"was filedon April 15, 1944..

. The totalizing mechanism to be described hereinafte'r is particularlyadapted for use in a machine where it is desirable to transmit into asingle member the accumulative total of movement of two members. In theembodiment disclosed the feeding members are two gears which are gearedto a totalizing member in such a manner that, for example, if onefeeding gear makes one-half of a revolution and the other feeding gearmakes one-quarter of a revolution, the totalizing member is driventhree-quarters of a revolution orthe total of the movements of bothfeeding gears. As another example, if the feeding gears are feedingunits into the totalizing member and three units are fed into thetotalizing. member by one gear and six units are fed into the totalizingmember by theother gear, then the totalizing member is moved an'amountequal to nine units.

Referring first to Figure 4, the totalizing member, which in the presentembodiment is an indicator wheel 214, is rotatably mounted on a bushing215 mounted on register shaft 290. Indicator Wheel 214 has two sun gearbores 216 and 211 out into the opposite sides thereof concentric to theaxis of rotation of the indicator wheel. These bores are made to receivetwo sun gears 218 and 219 (Figures 1 and 4) which are rotatably mountedon bushing 215 on opposite sides of indicator wheel 214. Sun gear 218,which has twenty teeth, has a gear 280 having twenty-five teeth mountedon and connected to its hub and sun gear 219, which has twenty teeth,also has a spur gear 28! mounted on and connected to its hub havingtwenty-five teeth.

Indicator wheel 214 has two other bores 282 and 283 (Figure 3) extendinginto the'body of the indicator wheel from opposite sides thereof. Thesebores 282 and 283 are in overlapping relationship with respect to eachother and bore 282 overlaps sun gear'bore 211 and Ibore 283 overlaps sungear bore 216. Differential pinions' 284 and 285 are rotat-ably mountedon pins 286 and 281 (Figures 2 and 5) mounted on the indicator wheel214. When sun gears 216 and 211 and the indicator wheel 214 are inassemibled relationship, the differential pinions 284 and 285, whichmesh at the point bores 282 and 283 (Figure 3) overlap, mesh with sungears 218 and 219 (Figures 1 and 5'), respectively.

Units are fed into spur gears 28!! and 28l by a feeding gear 256 and asimilar gear (not shown) in meshing engagement with gear 280 which turnin thesaine direction during feeding. In order that the totalizingmechanism accurately total the sums fed into it, it is necessary thatthe units of movement fed into it from the feeding gears be comprised ofan equal number of gear teeth. In the present embodiment a movement offive teeth of either of the feeding gears is the equivalent of one unitand the periphery of the indicator wheel carries the ten digits fromzero to nine on its surface equidistantly spaced with respect to eachother. When feeding gear 256 moves a distance of five teeth, it actsthrough spur gear 281 to drive sun gear 219 a distance of four teeth asspur gear 28! has twenty-five teeth and sun gear 219 has twenty teeth.If feeding gear 400 is stationary, because of the action of thedifferential, indicator wheel 214 is turned-adistance equivalent to twoof the teeth of sun gear21'9 or onetenth of a revolution. As a completerevolution of wheel 214 amounts to ten units, the result .is that wheel214 is moved a distance of. one ,unit. Accordingly, each time feedinggear 256 or feeding gear 400 moves a distanceoi-five teeth, then wheel214 is moved a distance of; one. unit.

If units are being fed into the indicator wheel from both feeding gears,then ,both sun gears 218 and 219 are turned inthe same direction. adistance of four teeth for each unit fed into them. This locks thedifferential pinions with respect to each other and with respect totheir respective sun gears with the result that wheel 214 is turned adistance equivalent to; four teeth of a. sun gear or two units. Thuswhenever both gears are feeding units into the indicator'wheel,theiindicator wheel is moved a. distance equivalent .to. the total ofthe units fed into it. Furthermore, the timing of the feeding ofunitsxby the feeding gears into the totalizing mechanism. can varybecause of thed-ifferential and thus, for example, feeding gear 40!] maybe one-third the way through feeding a unit into wheel 214 .when feedinggear 256-begins=feeding itsunit inand nevertheless wheel 214 willaccurately record both units.

If the totalizing mechanism forms a part of a gear train in a computingmachine, then the totalizing member may be ,provided with gear teeth onits periphery instead of carrying-digits from zero to nine thereon. Ifthe Wheel carries digits, it is desirable to keep track of'therevolutions of the indicator wheel andto thus record the total amountfed'into the indicator wheel. To accomplishthis, the-indicator wheel 214may be provided with a pair of Geneva transfer teeth 294 (Figure-2)which turn a Geneva transfer pinion 289 adistance of ,two teeth orone-quarter of a revolutioneachtime indicator wheel 214 makes .arevolution. vA gear 380, connected, to transfer pinion 289 is preferablygeared to feed ten units into suitable'registeringmechanism, generallyindicated atifll, each time pinion 289 makes one-quarter of arevolution. Thus an accurate record of the units fed; into the,indicator wheelmay be, kept. The indicatorwheel 214 is preferablymounted in a housing H;having a window 295 through which only onedigiton the wheel is visible-,at one time. Thispermits reading of theunitswhich have not-been transferred to theregisteringmechanism :by thetransfer pinion, 289. The transfer of ten units to the registering-mechanism is so timed that it takes place each time the digit visiblethrough window 295 changes fromnineto zero.

Thus it will be seen that efficient and, practical totalizing mechanismis shown and described which accurately totals units fed into it fromtwo. different sources. Furthermore, this-mechanism is so constructedthat ittotals units fed into it from either or bothsources operatingeither singly or in unison without, regard for the. timing 4 of thefeeding of units by either source. Thus it will be clear that theobjects hereinabove mentioned as well as many others have beensuccessfully accomplished.

As many possible embodiments may be made of the above invention allvwithoutdepa-rting from the scope of the invention it is to be understoodthat all matter hereinbefore set forth, or shown ,in the accompanyingdrawings, is to be interpreted as illustrative and not in a limitingsense.

. ably mounted on said wheel in meshing relation with respect to eachother, a pair of sun gears of the same size rotatably mounted on saidshaft, each :ofsaid sun gears meshing with one of said differentialpinions, separate gear means of the same size for driving eachof .saidsun gearscin the samedirection, each of said gear. means being adaptedto feed; units into its-sun,-gear,all';units fed into said sun gearsbeing equivalent in the amountof movement'produced in a.-sun gear,whereby said sun gears. acting throughsaid differential pinions causesaid indicator wheel to rotate an amount equal tothe sum of all ,-unitsfed into it from both sun gears, and tens transfer means actuated bysaid indicator-wheel for. registering accumulated tens.

. 2. In totalizing mechanism, in combination an indicatorwheel rotatablymounted on ,a shaft, said indicator wheel having digits, from Otov 9 onits periphery, a pairof differentialpinions. rotatably mounted on saidwheel in. meshing relation with respect to each other, a pair of sungears of the same size rotatably mounted on said shaft, each of said sungears meshing with one ofsaid differential pinions, separate means forfeeding units into eachofsaidsun.gears, ,said means driving said sungears in the samedirection all units fed into said-sungearsbeingequivalent in the amount. of movement producedina sun gear,whereby said sun gears acting through said differential pinions causesaid indicator wheel to rotate an amount. equaltothe, sum. of all unitsfed into it fr0m..both sun gears,..te.ns transfer means mounted ontheperiphery of, said indicator wheel, a Genevatransfer pinion, said tenstransfer means actuating said Genevatransfer pinion, and a registeractuated by saidtransferpinion to register tens accumulatedbysaidindicator wheel.

FREDERICK Q. RAST.

REFERENCES CITED The following referencesvareof recordin the file ofthis patent:

UNITED STATES PATENTS Number Name Date ,.503,946 Cook .-Aug.. 29,.- 18931,469,932 Adams Oct. 9,; 19 23; FOREIGN PATENTS Number Country ,Date

102,105 Austria Dec. 28,1925 23,241 Great Britain 1906

